<?php

class PostController extends Controller
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';
    private $_model;

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
			array('allow',  // allow all users to perform 'index' and 'view' actions
				'actions'=>array('index','view'),
				'users'=>array('*'),
			),
			array('allow', // allow authenticated users to perform any action
                'users'=>array('@'),
            ),
			array('deny',  // deny all users
				'users'=>array('*'),
			),
		);
	}

	/**
	 * Displays a particular model.
	 * @param integer $id the ID of the model to be displayed
	 */
	public function actionView($id)
	{
        $post=$this->loadModel();
        $comment = $this->newComment($post);
		$this->render('view',array(
			'model' => $post,
            'comment' => $comment,
		));
	}
     
    protected function newComment($post)
    {
        $comment=new Comment;

        if(isset($_POST['ajax']) && $_POST['ajax']==='comment-form')
        {
            echo CActiveForm::validate($comment);
            Yii::app()->end();
        }

        if(isset($_POST['Comment']))
        {
            $comment->attributes=$_POST['Comment'];
            if($post->addComment($comment))
            {
                if($comment->status==Comment::STATUS_PENDING)
                    Yii::app()->user->setFlash('commentSubmitted','Thank you...');
                $this->refresh();
            }
        }
        return $comment;
    }

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new Post;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Post']))
		{
			$model->attributes=$_POST['Post'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}

		$this->render('create',array(
			'model'=>$model,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Post']))
		{
			$model->attributes=$_POST['Post'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		if(Yii::app()->request->isPostRequest)
		{
			// we only allow deletion via POST request
			$this->loadModel($id)->delete();

			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}

	/**
	 * Lists all models.
	 */
    /*
	public function actionIndex()
	{
		$dataProvider=new CActiveDataProvider('Post');
		$this->render('index',array(
			'dataProvider'=>$dataProvider,
		));
	}
    */

    public function actionIndex()
    {
        $criteria=new CDbCriteria(array(
            'condition'=>'status='.Post::STATUS_PUBLISHED,
            'order'=>'update_time DESC',
            'with'=>'commentCount',
        ));
        if(isset($_GET['tag']))
            $criteria->addSearchCondition('tags',$_GET['tag']);

        $dataProvider=new CActiveDataProvider('Post', array(
            'pagination'=>array(
                'pageSize'=>5,
            ),
            'criteria'=>$criteria,
        ));

        $this->render('index',array(
            'dataProvider'=>$dataProvider,
        ));
    }

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{
		$model=new Post('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['Post']))
			$model->attributes=$_GET['Post'];

		$this->render('admin',array(
			'model'=>$model,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel()
	{
        if($this->_model===null)
        {
            if(isset($_GET['id']))
            {
                if(Yii::app()->user->isGuest)
                    $condition='status='.Post::STATUS_PUBLISHED
                        .' OR status='.Post::STATUS_ARCHIVED;
                else
                    $condition='';
                $this->_model=Post::model()->findByPk($_GET['id'], $condition);
            }
            if($this->_model===null)
                throw new CHttpException(404,'Запрашиваемая страница не существует.');
        }
		return $this->_model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='post-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
